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NE Land Surveyor practice questions

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Question 1Boundary

A retracement survey of a metes-and-bounds parcel begins at a stone monument called for in the original deed. Under the hierarchy of evidence used by boundary surveyors, how should that monument be treated relative to the deed's stated bearings and distances?

  1. The monument controls only if the original surveyor's field notes are unavailable for comparison.
  2. The monument and the record calls are given equal weight, so the surveyor averages the two positions.
  3. The record bearings and distances control, and the monument is accepted only if it matches them within the stated precision.
  4. The monument controls over the record bearings and distances, which are treated as secondary evidence. Correct answer.

Explanation

Monuments called for in a deed are generally the highest form of evidence of a boundary corner, outranking courses and distances in the record. This reflects the principle that an existing physical object better expresses the parties' intent than a written measurement that may contain scrivener's errors. Distance and bearing calls are used to check or reestablish the monument, not to override it.

Question 2Boundary

A deed describes a parcel as bounded on the north by "the centerline of Mill Creek." The creek has gradually shifted its channel over decades through natural erosion and deposition. Which doctrine generally governs ownership of the accreted strip?

  1. The boundary moves only if the shift is documented by a recorded survey within one year of the change.
  2. The state acquires all land abandoned by the creek as sovereign submerged land.
  3. The boundary moves with the creek, and the riparian owner gains or loses land through accretion and reliction. Correct answer.
  4. The boundary remains fixed at the creek's location as of the deed date, regardless of gradual movement.

Explanation

When a boundary is a natural watercourse and the change occurs by accretion or reliction (gradual and imperceptible), the boundary follows the water. Sudden avulsion, by contrast, leaves the boundary where it was. No survey deadline or state seizure applies to gradual natural movement.

Question 3Boundary

A surveyor finds an original iron pin at the position called for in a 1952 subdivision plat, but a later fence sits 3 feet inside the lot line and has been maintained for 25 years. The jurisdiction recognizes boundary by acquiescence with a 20-year period. Which conclusion is most defensible?

  1. The fence is irrelevant unless a quitclaim deed conveying the strip was recorded.
  2. The plat monument controls only if the fence is shown on the subdivision plat.
  3. The fence line may control if the adjoining owners treated it as the boundary for the statutory period, notwithstanding the plat monument. Correct answer.
  4. The plat monument always controls, because acquiescence cannot overcome a recorded subdivision plat.

Explanation

Boundary by acquiescence can establish a boundary where adjoining owners treat a visible line as the true line for the statutory period, even if it conflicts with record monuments. It is a doctrine of long-standing practical location, not a conveyance that requires a deed. The plat monument remains strong evidence but is not automatically dispositive against a proven acquiescence claim.

Question 4Boundary

Which of the following best states the rule of practical location as applied to uncertain boundary lines between adjoining owners?

  1. Adjoining owners may relocate a boundary only by filing a plat revision with the local authority.
  2. Practical location applies only to government lot corners, not to private partition lines.
  3. A boundary line is fixed solely by the record deed and cannot be altered by the parties' conduct.
  4. A boundary line agreed to and acted upon by adjoining owners for a long period may be treated as the true line even if it differs from the record. Correct answer.

Explanation

Practical location recognizes that where a boundary is uncertain or disputed, an agreement plus long acquiescence and improvement fixes the line. The doctrine protects settled expectations and avoids the hardship of relocating long-established improvements. It is not limited to government lots, nor does it require a plat revision.

Question 5Boundary

In a metes-and-bounds description, a call reads "thence to a point on the north bank of the river, thence down the river to the place of beginning." The distance call to the river conflicts with the actual bank location. Which call generally prevails?

  1. Neither prevails; the parcel is void for uncertainty.
  2. The call with the larger area calculation prevails.
  3. The call to the natural monument (the river bank) prevails over the distance call. Correct answer.
  4. The distance call prevails because it is more precise than a natural feature.

Explanation

Natural monuments such as rivers, streams, and banks are ranked above courses and distances in the hierarchy of calls. The distance is treated as a general expression that yields to the specific natural boundary. A conflict does not void the description; the surveyor applies the hierarchy to resolve it.

Question 6Boundary

A surveyor is retracing a line described as "north 45 degrees east, 10 chains" from a found monument. The surveyor's instrument reads the bearing as N 44°52' E over the measured distance. What is the most appropriate treatment of this discrepancy?

  1. Declare the deed ambiguous and stop the survey.
  2. Reject the monument because the bearing does not match the record exactly.
  3. Accept the found monument and note the small angular difference as within expected record error, using the monument as the controlling corner. Correct answer.
  4. Rotate the entire survey to force the bearing to N 45°00' E and ignore the monument.

Explanation

Original monuments control over record bearings, and small angular differences are expected because of instrument precision and historical measurement methods. The surveyor holds the monument and reports the discrepancy rather than distorting the survey. Exact agreement with record bearings is not required for a monument to be accepted.

Question 7Boundary

Which principle explains why a surveyor should give weight to the footsteps of the original surveyor when reestablishing lost corners in a government rectangular system?

  1. Original survey evidence, including the original surveyor's measurements and marks, is generally given controlling weight in reestablishing lost corners. Correct answer.
  2. The original surveyor's measurements are advisory only and may be replaced by any proportionate method.
  3. Later surveys always supersede the original because they use more accurate instruments.
  4. Only the General Land Office record plat, not field evidence, may be used.

Explanation

The doctrine of following the original surveyor's footsteps gives primacy to original evidence such as marks, bearing trees, and measurements when corners are lost. Proportionate methods are used only when original evidence is unavailable. Modern accuracy does not authorize relocating an original corner.

Question 8Boundary

A deed conveys a parcel "beginning at the northeast corner of Section 14" but the section corner monument is lost. Under the federal rectangular system, how is the corner properly reestablished?

  1. By proportionate measurement between the nearest existing original corners on the section lines. Correct answer.
  2. By setting the corner at the mathematical intersection of the record latitude and departure.
  3. By accepting the nearest property owner's recollection of where the corner stood.
  4. By extending the section lines from the nearest principal meridian without reference to existing corners.

Explanation

A lost corner is reestablished by proportionate measurement using the nearest existing original corners as control, preserving the original survey's relative positions. Single-proportion or double-proportion methods are chosen based on which controlling corners survive. Owner recollection and pure mathematical coordinates are not acceptable substitutes.

Question 9Boundary

A boundary dispute involves a strip of land between two deeds that overlap because of a common grantor. Which doctrine most directly addresses which grantee prevails when both deeds are otherwise valid?

  1. Priority of recording or notice, depending on the jurisdiction's recording statute. Correct answer.
  2. The doctrine of accretion, because the strip is treated as newly formed land.
  3. The doctrine of prescription, because the strip has been occupied.
  4. The rule of practical location, because the overlap creates an uncertain line.

Explanation

When a grantor conveys the same land twice, the conflict is resolved by the jurisdiction's recording statute, which may favor the first to record, the first to receive notice, or the first grantee depending on the statute type. Accretion, practical location, and prescription address different issues and do not resolve competing deeds from a common grantor.

Question 10Boundary

A surveyor discovers that a deed's area call (10 acres) conflicts with the computed area from the courses and distances (9.2 acres). What is the general rule for resolving this conflict?

  1. Courses and distances generally control over the area call. Correct answer.
  2. The parcel is divided equally between the conflicting calls.
  3. The area call always controls because it is the most specific description.
  4. The conflict must be resolved by a court before any survey is valid.

Explanation

Area is generally the weakest of the calls and yields to monuments, courses, and distances. The stated acreage is often approximate and may reflect an earlier or rounded computation. The surveyor relies on the more specific calls and reports the discrepancy.

Question 11Boundary

An adjoining owner claims title to a strip of land by adverse possession. Which element is essential to establish the claim?

  1. Occasional use of the strip for recreation by the claimant's family.
  2. Permission from the record owner to use the strip.
  3. A recorded deed describing the strip, plus payment of taxes for one year.
  4. Open, notorious, exclusive, hostile, and continuous possession for the statutory period. Correct answer.

Explanation

Adverse possession requires possession that is actual, open and notorious, exclusive, hostile, and continuous for the statutory period. Payment of taxes and color of title matter in some jurisdictions but do not replace the core elements. Permissive use defeats the hostility element.

Question 12Boundary

A boundary line is described as running "to a white oak tree" that no longer exists, but the original field notes record a bearing tree 12 links from the corner. How should the surveyor treat the recorded bearing tree?

  1. As a call that must be ignored in favor of the deed's distance.
  2. As controlling only if a photograph of the tree exists.
  3. As irrelevant, because the tree no longer stands.
  4. As strong secondary evidence of the corner location, used to reestablish the point when the called-for tree is gone. Correct answer.

Explanation

Bearing trees recorded in original field notes are valuable evidence for reestablishing a lost corner when the primary monument is gone. Their recorded bearing and distance from the corner allow the surveyor to reconstruct the position. A photograph is not a prerequisite, and distances do not override such original evidence.

Question 13Boundary

Which statement correctly distinguishes a monument from a mark in boundary surveying practice?

  1. A monument and a mark are synonymous and may be used interchangeably in all contexts.
  2. A monument is the physical object marking a corner, while a mark is the physical evidence placed on or in the monument to identify it. Correct answer.
  3. A monument is always a natural feature, while a mark is always artificial.
  4. A monument is a written record, while a mark is a physical object.

Explanation

In common usage, the monument is the object set to occupy and identify the corner, such as a stone, iron pin, or concrete post. The mark is the physical evidence on the monument, such as a scribed line, cap stamping, or chiseled cross. The terms are related but not interchangeable in precise practice.

Question 14Boundary

A surveyor is asked to locate a boundary along a non-navigable stream. Under the common law rule for non-navigable streams, where does the boundary lie for a riparian owner?

  1. At the edge of the floodplain as mapped by the federal agency.
  2. At the low water mark on the opposite side.
  3. At the thread (centerline) of the stream, subject to the rights of other riparian owners. Correct answer.
  4. At the ordinary high water mark on the owner's side.

Explanation

Under the common law rule for non-navigable streams, riparian owners typically hold title to the thread or centerline of the stream, subject to reasonable use by other riparians. The high water mark rule is generally associated with navigable waters under state law. Floodplain mapping does not define the legal boundary.

Question 15Boundary

A deed calls for a boundary to run "to the center of the public road." The road has been vacated by the local government. What is the general effect on the boundary?

  1. The boundary moves to the nearest section line.
  2. The boundary automatically moves to the edge of the former right-of-way.
  3. The boundary generally remains at the center of the former road, and the vacated fee may pass to the abutting owners subject to state law. Correct answer.
  4. The boundary is extinguished and the parcel becomes undefined.

Explanation

When a road is vacated, the centerline boundary generally remains as described, and the underlying fee in the vacated right-of-way may pass to abutting owners according to state law. The boundary does not automatically shift to the right-of-way edge, nor is the parcel rendered undefined. Local statutes govern the disposition of the vacated fee.

Question 16Boundary

Which of the following is the best example of a natural monument in a boundary description?

  1. A brass disk stamped with the corner designation.
  2. A recorded plat map showing the corner.
  3. A blazed and scribed white oak tree at the corner. Correct answer.
  4. A concrete post with a metal cap.

Explanation

A natural monument is a physical feature of the landscape, such as a tree, rock, or stream, that is called for in the description. Artificial monuments include set disks, posts, and caps. A plat map is a record document, not a monument on the ground.

Question 17Boundary

A surveyor finds that a section corner monument has been disturbed and reset by a later surveyor at a location inconsistent with the original bearing trees. How should the surveyor proceed?

  1. Accept the reset monument because it is the most recent physical evidence.
  2. Ignore both and set the corner by mathematical coordinates.
  3. Give greater weight to the original bearing tree evidence and treat the reset monument as unreliable. Correct answer.
  4. Average the positions of the reset monument and the bearing trees.

Explanation

Original evidence such as bearing trees generally outweighs a later, disturbed, or improperly reset monument. The surveyor should evaluate the provenance of each monument and give priority to evidence tied to the original survey. Averaging or relying on coordinates is not a substitute for proper evidentiary analysis.

Question 18Boundary

A parcel is described by reference to a recorded subdivision plat. Which document generally controls the boundary location if the plat and a later deed description conflict?

  1. The seller's disclosure statement, because it reflects the parties' understanding.
  2. The county assessor's parcel map, because it is used for taxation.
  3. The later deed description, because it is more recent.
  4. The recorded plat referenced in the deed, because the deed incorporates it by reference. Correct answer.

Explanation

When a deed incorporates a recorded plat by reference, the plat becomes part of the description and generally controls the lot boundaries. A later conflicting deed description does not automatically override the incorporated plat. Assessor maps and disclosure statements are not controlling boundary evidence.

Question 19Boundary

A boundary line follows a fence that was built by mistake 2 feet off the record line, and both owners believed the fence was the true line for 30 years. Which doctrine is most likely to confirm the fence as the boundary?

  1. Doctrine of escheat.
  2. Rule of merger.
  3. Doctrine of avulsion.
  4. Boundary by agreement and acquiescence. Correct answer.

Explanation

Where adjoining owners treat a fence as the boundary for the statutory period, boundary by agreement and acquiescence can confirm it even if it was originally misplaced. Avulsion concerns sudden watercourse changes, merger concerns unity of title, and escheat concerns property reverting to the state.

Question 20Boundary

In the public land survey system, what is the standard length of a township along its boundaries under the original rectangular system?

  1. Three miles on each side, containing 9 sections.
  2. Six miles on each side, containing 36 sections. Correct answer.
  3. Twelve miles on each side, containing 144 sections.
  4. One mile on each side, containing 36 sections.

Explanation

A standard township is six miles square and contains 36 sections, each nominally one mile square and 640 acres. The township is the basic unit of the rectangular system, subject to correction lines and fractional lots along the north and west tiers.

Question 21Boundary

A surveyor is preparing a boundary survey of a parcel abutting a meandered lake. Which factor most directly determines whether the riparian boundary extends to the water or stops at the meander line?

  1. Whether the lake is navigable under the applicable state law. Correct answer.
  2. Whether the meander line was surveyed with a compass or a total station.
  3. Whether the lake has been mapped by a federal agency.
  4. Whether the parcel's deed states an area in acres.

Explanation

The legal boundary along a lake depends primarily on navigability under state law, which determines whether the state holds submerged lands and where private riparian title ends. Meander lines are generally not boundary lines; they approximate the water's edge for area computation. Instrument type, stated acreage, and federal mapping do not control the boundary.

Question 22Boundary

A deed description contains a call for an adjoiner's line as a boundary. How is such a call generally treated in the hierarchy of evidence?

  1. As a call for a monument or boundary of an adjoining property, which is generally strong evidence of the line's location. Correct answer.
  2. As the weakest call, subordinate to area and distance.
  3. As irrelevant unless the adjoiner's deed is recorded in the same county.
  4. As controlling only if the adjoiner's line is marked by a fence.

Explanation

A call for an adjoiner's line is a call for an existing boundary of a neighboring property and is generally treated as strong evidence of the intended line. It is not dependent on the recording location of the adjoiner's deed or on the presence of a fence. Area remains the weakest call.

Question 23Boundary

A surveyor discovers that the original government corner was a stone that has been removed, but the original field notes describe it as a "limestone 18x12x4 inches, set 12 inches in the ground." Which method is most appropriate for reestablishing the corner?

  1. Use the field note description and proportionate measurement from surviving original corners to reestablish the position. Correct answer.
  2. Accept the nearest landowner's memory of the stone's location.
  3. Set a new corner at the mathematical center of the section regardless of surviving evidence.
  4. Decline to reestablish the corner because the original stone is gone.

Explanation

When an original corner monument is lost, the surveyor uses original field note descriptions together with proportionate measurement from surviving original corners to reestablish the position. Mathematical centering and owner memory are not acceptable substitutes. The corner can and should be reestablished using the available evidence.

Question 24Construction design, layout

A surveyor must set a building corner 50.00 ft from a baseline along a perpendicular offset. Which field procedure establishes the perpendicular most reliably on a construction site?

  1. Measure the offset by pacing perpendicular to the baseline and refine by eye
  2. Stretch a tape at an estimated right angle and check the diagonal after staking
  3. Turn a 45-degree angle twice from the baseline using a hand compass
  4. Establish a 3-4-5 triangle from the baseline point and pull the offset along the resulting leg Correct answer.

Explanation

A 3-4-5 (or multiple) triangle creates a geometrically exact 90-degree angle using only tape distances, which is the standard field method for laying out a perpendicular offset. Compass bearings and pacing introduce angular error far too large for construction tolerances.

Question 25Construction design, layout

In construction layout, what does a batter board assembly primarily provide?

  1. A reference line and elevation from which stringlines are stretched outside the excavation Correct answer.
  2. A benchmark tied to the national vertical datum
  3. A form of slope stake marking the catch point
  4. A permanent monument for the property corner

Explanation

Batter boards are set back from the excavation and carry stringlines and grade marks that preserve the building lines and elevations after digging begins. They are temporary construction references, not monuments or datum benchmarks.

Question 26Construction design, layout

A level is set up midway between two points to eliminate which error when transferring an elevation?

  1. Instrument index error
  2. Curvature and refraction differences between the backsight and foresight
  3. Collimation error when backsight and foresight distances are equal Correct answer.
  4. Parallax in the telescope

Explanation

Balancing backsight and foresight distances cancels the effect of a line-of-sight that is not exactly horizontal (collimation error), because the same tilt applies to both readings. Curvature and refraction are also reduced by equal distances but are handled separately in precise work.

Question 27Construction design, layout

A total station occupies a control point and backsights a second control point. Which setup step most directly ensures measured horizontal angles are referenced to the correct grid direction?

  1. Measuring the height of the target prism
  2. Recording the atmospheric temperature and pressure
  3. Entering the instrument height above the point
  4. Setting the backsight azimuth and checking the resulting orientation Correct answer.

Explanation

Orienting the instrument by entering the known backsight azimuth ties the horizontal circle to the project coordinate system. Heights and atmospheric parameters affect distances and elevations, not the horizontal orientation.

Question 28Construction design, layout

When staking a proposed building, why is a diagonal check between opposite corners performed after layout?

  1. To establish the elevation of the finished floor
  2. To compute the area of the building footprint
  3. To confirm the corners form a true rectangle and detect angular or distance blunders Correct answer.
  4. To set the offset distance for batter boards

Explanation

Equal diagonals confirm that the laid-out figure is rectangular; a mismatch reveals accumulated angular or taping errors before construction proceeds. The check is geometric verification, not an elevation or area computation.

Question 29Construction design, layout

A cut sheet specifies a grade of 102.50 ft for a storm line invert. A benchmark reads 105.00 ft and the instrument is set so the backsight plus height of instrument equals 110.00 ft. What rod reading marks the required invert grade?

  1. 10.00 ft
  2. 2.50 ft
  3. 7.50 ft Correct answer.
  4. 5.00 ft

Explanation

The rod reading at grade equals height of instrument minus design elevation, so 110.00 minus 102.50 gives 7.50 ft. This is the standard grade-rod computation used to set pipe inverts and structure bottoms.

Question 30Construction design, layout

Which statement correctly describes the purpose of slope stakes in roadway construction layout?

  1. They mark the centerline stationing only
  2. They mark where the design side slope intersects existing ground Correct answer.
  3. They establish the horizontal alignment tangent points
  4. They mark the location of the vertical curve high point

Explanation

Slope stakes are set at the catch point, where the designed cut or fill slope meets original ground, so the grading operation knows where to begin and end. They are distinct from centerline, curve, and alignment stakes.

Question 31Construction design, layout

A surveyor must lay out a horizontal circular curve for a curb line. Which pair of elements is sufficient to stake the curve by deflection angles from the PC?

  1. External distance and middle ordinate
  2. Radius and the deflection angle to each station Correct answer.
  3. Degree of curve and the tangent length only
  4. Long chord and the tangent distance

Explanation

Deflection angles from the tangent at the PC are computed from arc length and radius, so radius plus the deflection to each station lets the curve be staked incrementally. Other curve elements describe the geometry but do not by themselves give stake directions.

Question 32Construction design, layout

During layout of a footing, the surveyor sets offset stakes rather than staking the actual corners. What is the main advantage of this practice?

  1. It removes the need to check the diagonals
  2. It keeps reference points clear of excavation and construction activity Correct answer.
  3. It eliminates the need for a benchmark
  4. It allows the footing to be placed without a grade check

Explanation

Offset stakes are set beyond the excavation limits so equipment and digging do not destroy the references; stringlines stretched between them re-establish the corners. They supplement, but do not replace, benchmarks or geometric checks.

Question 33Construction design, layout

A contractor reports that a laser level's rotating beam appears higher on a distant wall than near the instrument. Which factor should the surveyor investigate first?

  1. The tripod is set on soft ground causing settlement
  2. The rod is not plumb at the near point
  3. The beam is not truly horizontal because the instrument is out of calibration Correct answer.
  4. The target is at a different temperature than the instrument

Explanation

A rotating laser that reads progressively higher with distance indicates the beam plane is tilted, typically from calibration drift or an unleveled setup. Settlement would cause a consistent error, and rod plumbing affects individual readings rather than a systematic slope.

Question 34Construction design, layout

What is the standard purpose of a benchmark in a construction layout project?

  1. To mark the limit of disturbance for erosion control
  2. To locate the horizontal alignment of a utility
  3. To provide a known elevation reference from which all grades are transferred Correct answer.
  4. To identify the property boundary line

Explanation

A benchmark is a stable point of known elevation that serves as the origin for all vertical control on the site. Boundary, utility alignment, and limit-of-disturbance markers serve different functions.

Question 35Construction design, layout

A surveyor must transfer a grade to the bottom of a deep excavation where the line of sight from the surface is blocked. Which technique is appropriate?

  1. Pacing the depth from the surface and subtracting from the benchmark
  2. Turning a vertical angle with a total station and ignoring curvature
  3. Using a level and rod in a series of setups down the excavation, keeping sight distances balanced Correct answer.
  4. Using a hand level held at eye level against the excavation wall

Explanation

Chaining elevations through successive level setups, each with balanced backsight and foresight, carries the benchmark elevation down accurately. Ignoring curvature, pacing, or a hand level cannot meet construction grade tolerances.

Question 36Construction design, layout

In construction staking, what does the term 'station' represent on a linear project?

  1. The elevation of the finished surface
  2. A fixed instrument setup location
  3. A distance measured along the baseline, usually in 100-ft or 1000-ft units Correct answer.
  4. The angular deflection from the previous tangent

Explanation

Stationing is a distance-along-the-line reference where a full station equals 100 ft in US practice (or 1000 ft in metric-style stationing). It is not an instrument location, an angle, or an elevation.

Question 37Construction design, layout

A building corner is to be set using a total station with coordinates. The instrument occupies N 5000.00, E 5000.00 and the corner is at N 5100.00, E 5000.00. What azimuth should be turned to the corner?

  1. 0 degrees Correct answer.
  2. 270 degrees
  3. 90 degrees
  4. 180 degrees

Explanation

The corner lies due north of the instrument because the northing increases while easting is unchanged, giving an azimuth of 0 degrees. Azimuths are measured clockwise from north in surveying practice.

Question 38Construction design, layout

Which condition most commonly causes a 'closing error' when a building perimeter is laid out by tape and offsets?

  1. Reading the rod to the nearest hundredth
  2. Cumulative small angular errors and tape misalignment around the loop Correct answer.
  3. Setting the instrument over a point with a plumb bob
  4. Using a steel tape at a temperature different from calibration

Explanation

Loop traverses accumulate angular and linear errors at each setup, producing a misclosure when the perimeter returns to the start. Temperature is a correctable systematic effect, while rod reading precision and plumbing are separate concerns.

Question 39Construction design, layout

A surveyor needs to set a point at a specified bearing and distance from an existing monument using only a tape and compass. Which limitation most affects accuracy?

  1. The monument elevation is unknown
  2. Magnetic declination and local attraction affect the bearing Correct answer.
  3. The compass cannot be read in daylight
  4. The tape cannot measure distances greater than 100 ft

Explanation

Compass bearings are referenced to magnetic north, which differs from true or grid north by declination and can be distorted by local attraction from steel or buried utilities. Tape length and monument elevation do not limit the bearing accuracy in the same way.

Question 40Construction design, layout

What is the primary function of a grade stake with a marked cut or fill?

  1. To indicate the horizontal offset to the property line
  2. To mark the location of a benchmark
  3. To record the station of the vertical curve
  4. To show how much material to remove or add to reach design grade Correct answer.

Explanation

A cut or fill written on a grade stake tells the equipment operator the vertical distance to the design surface at that point. It is not a boundary, curve, or benchmark marker.

Question 41Construction design, layout

A total station is used to lay out points by angle and distance from a control point. Which practice best reduces the chance of a gross error in the field?

  1. Measuring to a second known control point as a check before staking Correct answer.
  2. Using a longer backsight distance than the foresight
  3. Relying on a single measurement and staking immediately
  4. Increasing the instrument height to improve accuracy

Explanation

Checking to an independent known point confirms the orientation and scale before committing stakes. Single measurements offer no redundancy, and instrument height or sight-length ratios do not detect gross errors.

Question 42Construction design, layout

In a cut-and-fill computation for a building pad, the existing ground at a grid point is 98.20 ft and the design pad elevation is 100.00 ft. What is the required action at that point?

  1. No earthwork is required
  2. Fill 1.80 ft of material Correct answer.
  3. Cut 1.80 ft of material
  4. Cut 2.80 ft of material

Explanation

Design elevation minus existing ground equals 100.00 minus 98.20, or 1.80 ft of fill needed to raise the ground to pad grade. A positive result indicates fill, while a negative result would indicate cut.

Question 43Construction design, layout

Which instrument setup error would cause all staked points to be shifted by a constant amount in the same direction?

  1. A backsight oriented to the wrong azimuth Correct answer.
  2. Random rod reading mistakes at each stake
  3. Instrument parallax not removed
  4. Tape temperature variation during the day

Explanation

An incorrect backsight azimuth rotates the entire layout about the occupied point, shifting every stake systematically. Random mistakes, temperature changes, and parallax produce varying or smaller errors rather than a uniform directional shift.

Question 44Construction design, layout

What is the purpose of a plumbing check when setting a stake directly over a survey point?

  1. To confirm the elevation of the stake top
  2. To ensure the stake is vertical so the mark overlies the point Correct answer.
  3. To measure the distance to the backsight
  4. To set the azimuth of the baseline

Explanation

A stake must be driven plumb so that the mark on its top or side is directly above the ground point it represents. Plumbing does not establish elevation, distance, or azimuth.

Question 45Construction design, layout

A construction layout requires setting a point 25.00 m from a control point along an azimuth of 135 degrees. Which coordinate change results from this layout in a standard north-azimuth system?

  1. Northing decreases, easting increases Correct answer.
  2. Northing increases, easting increases
  3. Northing increases, easting decreases
  4. Northing decreases, easting decreases

Explanation

An azimuth of 135 degrees lies in the southeast quadrant, so the northing decreases and the easting increases. Azimuths between 90 and 180 degrees always produce this combination of coordinate changes.

Question 46Construction design, layout

During layout of a retaining wall, the surveyor finds the as-built top of wall is consistently 0.05 ft above the design grade at every station. Which explanation is most consistent with this result?

  1. Random staking errors at each station
  2. Differential settlement of individual stakes
  3. Curvature and refraction varying along the wall
  4. A systematic error such as an incorrect benchmark elevation or rod zero error Correct answer.

Explanation

A constant offset at every station points to a systematic source, such as a benchmark elevation that is wrong by 0.05 ft or a rod with a zero error. Random errors, curvature, and local settlement would vary rather than remain uniform.

Question 47Geodesy

In the NAD83 system, the geodetic datum is best described as which of the following?

  1. A mathematical model that replaces the ellipsoid with a sphere for all computations
  2. A vertical reference surface used only for orthometric heights
  3. A projection method for converting geodetic coordinates to plane coordinates
  4. A reference frame defining the orientation, origin, and scale of the coordinate system relative to the Earth Correct answer.

Explanation

A geodetic datum fixes the relationship between the coordinate system and the physical Earth, including origin, orientation, and scale. It is distinct from a map projection, which merely transforms coordinates onto a plane. Vertical datums are a separate concept tied to a height reference surface.

Question 48Geodesy

Which ellipsoid parameter pair is sufficient to fully define the size and shape of a reference ellipsoid?

  1. Mean radius and eccentricity anomaly
  2. Semi-major axis and flattening Correct answer.
  3. Semi-minor axis and geoid undulation
  4. Equatorial circumference and equatorial radius

Explanation

A reference ellipsoid is fully defined by its semi-major axis and flattening (or equivalently the semi-major axis and eccentricity). The flattening encodes the polar compression relative to the equatorial radius. Equatorial circumference and equatorial radius describe the same dimension, so they do not independently determine the polar dimension.

Question 49Geodesy

A surveyor records a latitude of 41° 12' 36" N. What is this value expressed in decimal degrees to four decimal places?

  1. 41.2067°
  2. 41.2160°
  3. 41.2100° Correct answer.
  4. 41.2200°

Explanation

Convert minutes and seconds: 12' = 0.2°, and 36" = 0.01°. Summing gives 41 + 0.2 + 0.01 = 41.2100°. Careful unit conversion is essential when exchanging coordinates between field and GIS systems.

Question 50Geodesy

Geodetic latitude is defined as the angle between which two elements?

  1. The tangent to the meridian and the polar axis
  2. The radius vector from the geocenter and the equatorial plane
  3. The vertical plumb line and the equatorial plane
  4. The ellipsoid normal at the point and the equatorial plane Correct answer.

Explanation

Geodetic latitude uses the normal to the reference ellipsoid at the point, measured from the equatorial plane. This differs from geocentric latitude, which uses the radius vector, and from astronomical latitude, which uses the plumb line. The distinction matters when converting between coordinate systems.